Finished in the US (Score 3, Informative)

PDA might be finished in the US, but not in other parts of the world... You'd be surprised how many of those you can see on Tokyo's metro. In the US, you're never in a situation where you really need a PDA. You're in your car, at home, in the office, or with friends. In all of these cases you do not need a PDA. PDA's are great when you ride public transport, like I do in Japan. I can prepare my emails, my todo list, my calendar, check my trains, learn japanese... while riding the train, and that's really usefull. Cell phone screen is too small to do any of that. And I see many other people who also type away on their PDA, 2/3 in each car...